diff --git a/lib/krb5/kcm.h b/lib/krb5/kcm.h
index edc496cf1..10dfa440f 100644
--- a/lib/krb5/kcm.h
+++ b/lib/krb5/kcm.h
@@ -63,6 +63,7 @@ typedef enum kcm_operation {
 } kcm_operation;
 
 #define _PATH_KCM_SOCKET      "/var/run/.kcm_socket"
+#define _PATH_KCM_DOOR      "/var/run/.kcm_door"
 
 #endif /* __KCM_H__ */